Well, I for one cannot binge watch anime or even television in general for so many hours. Most I've ever done so is perhaps four hours tops (anime). However, I can binge read manga and books in general for sure - spend hours upon hours reading heh.

Marathoning/binge-watching is my preferred way of watching anime, I find I almost always enjoy it more that way. I usually do about 4-5 episodes a sitting, 6-8 if I really like it and have nothing else to do. The most I've ever watched in a row was the entire anime "Shiki" (22 episodes long) one night instead of sleeping, and 22 episodes of Shakugan no Shana S1 one day. That said, I usually take a break after especially long sessions... but not for long! ANIME NEVER SLEEPS MOTHERFUCKER.

There doesn't appear to be any pattern, but my interest will wane and wax. I'll always be watching a little bit here and there, but sometimes I'll suddenly burn through half a dozen shows. Mostly these are 12 episode, single-season dealies though.

Don't think I've ever tried to catch up on a long-runner in a full-on binge. Like Sonic up there I prefer to mix it up a bit. Havin trouble finding some good western animation right now though, might have to do some searching.